Class: Serrano::RequestCursor

Inherits:
Object
  • Object
show all
Includes:
Helpers
Defined in:
lib/serrano/filterhandler.rb,
lib/serrano/request_cursor.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helpers

#filter_handler, #rename_keys, #stringify

Constructor Details

#initialize(endpt, id, query, filter, offset, limit, sample, sort, order, facet, select, works, agency, options, verbose, cursor, cursor_max, args) ⇒ RequestCursor

Returns a new instance of RequestCursor.



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# File 'lib/serrano/request_cursor.rb', line 38

def initialize(endpt, id, query, filter, offset,
  limit, sample, sort, order, facet, select, 
  works, agency, options, verbose, cursor, 
  cursor_max, args)

  self.endpt = endpt
  self.id = id
  self.query = query
  self.filter = filter
  self.offset = offset
  self.limit = limit
  self.sample = sample
  self.sort = sort
  self.order = order
  self.facet = facet
  self.select = select
  self.works = works
  self.agency = agency
  self.options = options
  self.verbose = verbose
  self.cursor = cursor
  self.cursor_max = cursor_max
  self.args = args
end

Instance Attribute Details

#agency ⇒ Object

Returns the value of attribute agency.



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# File 'lib/serrano/request_cursor.rb', line 31

def agency
  @agency
end

#args ⇒ Object

Returns the value of attribute args.



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# File 'lib/serrano/request_cursor.rb', line 36

def args
  @args
end

#cursor ⇒ Object

Returns the value of attribute cursor.



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# File 'lib/serrano/request_cursor.rb', line 34

def cursor
  @cursor
end

#cursor_max ⇒ Object

Returns the value of attribute cursor_max.



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# File 'lib/serrano/request_cursor.rb', line 35

def cursor_max
  @cursor_max
end

#endpt ⇒ Object

Returns the value of attribute endpt.



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# File 'lib/serrano/request_cursor.rb', line 19

def endpt
  @endpt
end

#facet ⇒ Object

Returns the value of attribute facet.



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# File 'lib/serrano/request_cursor.rb', line 28

def facet
  @facet
end

#filter ⇒ Object

Returns the value of attribute filter.



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# File 'lib/serrano/request_cursor.rb', line 22

def filter
  @filter
end

#id ⇒ Object

Returns the value of attribute id.



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# File 'lib/serrano/request_cursor.rb', line 20

def id
  @id
end

#limit ⇒ Object

Returns the value of attribute limit.



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# File 'lib/serrano/request_cursor.rb', line 24

def limit
  @limit
end

#offset ⇒ Object

Returns the value of attribute offset.



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# File 'lib/serrano/request_cursor.rb', line 23

def offset
  @offset
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/serrano/request_cursor.rb', line 32

def options
  @options
end

#order ⇒ Object

Returns the value of attribute order.



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# File 'lib/serrano/request_cursor.rb', line 27

def order
  @order
end

#query ⇒ Object

Returns the value of attribute query.



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# File 'lib/serrano/request_cursor.rb', line 21

def query
  @query
end

#sample ⇒ Object

Returns the value of attribute sample.



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# File 'lib/serrano/request_cursor.rb', line 25

def sample
  @sample
end

#select ⇒ Object

Returns the value of attribute select.



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# File 'lib/serrano/request_cursor.rb', line 29

def select
  @select
end

#sort ⇒ Object

Returns the value of attribute sort.



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# File 'lib/serrano/request_cursor.rb', line 26

def sort
  @sort
end

#verbose ⇒ Object

Returns the value of attribute verbose.



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# File 'lib/serrano/request_cursor.rb', line 33

def verbose
  @verbose
end

#works ⇒ Object

Returns the value of attribute works.



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# File 'lib/serrano/request_cursor.rb', line 30

def works
  @works
end

Instance Method Details

#_redo_req(js, opts, cu, max_avail) ⇒ Object 



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# File 'lib/serrano/request_cursor.rb', line 126

def _redo_req(js, opts, cu, max_avail)
  if !cu.nil? and self.cursor_max > js['message']['items'].length
    res = [js]
    total = js['message']['items'].length
    while !cu.nil? and self.cursor_max > total and total < max_avail do
      opts[:cursor] = cu
      out = self._req($endpt2, opts)
      cu = out['message']['next-cursor']
      res << out
      total = res.collect {|x| x['message']['items'].length}.reduce(0, :+)
    end
    return res
  else
    return js
  end
end

#_req(path, opts) ⇒ Object 



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# File 'lib/serrano/request_cursor.rb', line 143

def _req(path, opts)
  res = $conn.get path, opts
  return MultiJson.load(res.body)
end

#perform ⇒ Object 



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# File 'lib/serrano/request_cursor.rb', line 63

def perform
  filt = filter_handler(self.filter)
  fieldqueries = field_query_handler(self.args)
  self.select = self.select.join(",") if self.select && self.select.class == Array

  if self.cursor_max.class != nil
    if !self.cursor_max.kind_of?(Integer)
      raise "cursor_max must be of class int"
    end
  end

  arguments = { query: self.query, filter: filt, offset: self.offset,
          rows: self.limit, sample: self.sample, sort: self.sort,
          order: self.order, facet: self.facet, select: self.select, 
          cursor: self.cursor }.tostrings
  arguments = arguments.merge(fieldqueries)
  opts = arguments.delete_if { |k, v| v.nil? }

  if verbose
    $conn = Faraday.new(:url => Serrano.base_url, :request => options || []) do |f|
      f.response :logger
      f.use FaradayMiddleware::RaiseHttpException
      f.adapter Faraday.default_adapter
    end
  else
    $conn = Faraday.new(:url => Serrano.base_url, :request => options || []) do |f|
      f.use FaradayMiddleware::RaiseHttpException
      f.adapter Faraday.default_adapter
    end
  end

  $conn.headers[:user_agent] = make_ua
  $conn.headers["X-USER-AGENT"] = make_ua

  if self.id.nil?
    $endpt2 = self.endpt
    js = self._req(self.endpt, opts)
    cu = js['message']['next-cursor']
    max_avail = js['message']['total-results']
    res = self._redo_req(js, opts, cu, max_avail)
    return res
  else
    coll = []
    Array(self.id).each do |x|
      if self.works
        $endpt2 = self.endpt + '/' + x.to_s + "/works"
      else
        if self.agency
          $endpt2 = self.endpt + '/' + x.to_s + "/agency"
        else
          $endpt2 = self.endpt + '/' + x.to_s
        end
      end

      js = self._req($endpt2, opts)
      cu = js['message']['next-cursor']
      max_avail = js['message']['total-results']
      coll << self._redo_req(js, opts, cu, max_avail)
    end
    return coll
  end
end